The soaring price of everyday food items has been laid bare - with the cost of vegetable oil rising 65% and pasta 60% in a year.
Other huge increases include the price of tea, which had risen by 46%, according to new data from the Office for National Statistics (ONS).
Chips were up 39%, bread rose by 38% and biscuits were up 34%.
But some items had fallen in price. Orange juice fell by 9%, minced beef was down 7%, sugar by 0.3% and rice by 0.2%.
The ONS looked at 1.5million online prices over the 12 months to September 2022, with the figures representing the difference in lowest prices.
It comes after Consumer Price Index (CPI) inflation - the main measure of how much goods and services have risen in price - is at a 40-year high of 10.1%.
Food and energy were the largest contributors for the jump in inflation in the 12 months to September. Food and non-alcoholic beverage prices rose by 14.5%.
The rise in the cost of groceries has been accelerated by the war in Ukraine, which is continuing to push up the price of animal feed, fertiliser and vegetable oil.
The ONS cautioned that one limitation of its latest data release is product availability.
For example, some items were not always available in store or online which meant the next lowest-price option was used as a substitution.
National statistician Sir Ian Diamond said: "While the recent spike in inflation began with energy prices, today's fresh insights using a new innovative data source show they are now filtering through to other important items, with the cheapest price of some staple food items rising by around two-thirds in the last year.
"Figures from our near real time survey of people show that while rises in food and energy costs are affecting many people across the country, those who are disabled, from certain ethnic minority backgrounds and renters are among those struggling the most.
"With rises in the cost of living at the forefront of many people’s minds, our new, almost real time, data showing just how prices are changing and shining a light on how different groups are affected have never been more important."
How price of 30 food items has changed over time
- Vegetable oil: 65.2%
- Pasta: 59.9%
- Tea: 46.0%
- Chips: 38.7%
- Bread: 37.6%
- Biscuits: 34.4%
- Mixed frozen vegetables: 31.9%
- Milk: 29.4%
- Crisps: 23.7%
- Tomatoes: 19.3%
- Instant coffee: 18.8%
- Sausages: 18.3%
- Onions: 18.0%
- Apples: 17.2%
- Baked beans: 16.2%
- Potato: 13.2%
- Fish fingers: 13.1%
- Tomato ketchup: 12.1%
- Breakfast cereal: 10.6%
- Cheese: 10.4%
- Chicken breast: 10.1%
- Ham: 9.9%
- Bananas: 7.0%
- Fruit squash: 6.7%
- Yoghurt: 6.6%
- Pizza: 3.2%
- Granulated sugar: -0.3%
- Rice: -0.2%
- Beef mince: -7.4%
- Fruit juice orange: -8.9%
